|
%I #17 Oct 29 2023 09:45:40
%S 1,2,3,7,683,10729
%N a(n) is the greatest prime factor of A072446(n).
%C The references are about the notion of connectivity spaces (in French, "espaces connectifs").
%H S. Dugowson, <a href="http://msh.revues.org/document3908.html">Les frontieres dialectiques</a>, Mathematiques et sciences humaines, no. 177, Spring 2007.
%H S. Dugowson, <a href="http://arXiv.org/abs/0707.2542">Representation of finite connective spaces</a>, arXiv:0707.2542 [math.GN], 2007.
%F a(n) = A006530(A072446(n)).
%Y Cf. A006530, A072446.
%K nonn,less,more
%O 1,2
%A S. Dugowson (dugowson(AT)ext.jussieu.fr), Jun 08 2007
%E Edited and a(6) corrected by _Andrew Howroyd_, Oct 28 2023
|
